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作者:

Zhou, Wenbin (Zhou, Wenbin.) | Han, Dongmei (Han, Dongmei.) | Xia, Guodong (Xia, Guodong.) (学者:夏国栋)

收录:

EI Scopus SCIE

摘要:

The dramatic development in electronics results in an increasing cooling challenge. Nucleate pool boiling, as an efficient phase-change heat transfer technology without external energy consumption, is highly promising for sustainable high-heat-flux dissipation. To facilitate the design of boiling surfaces, an explicit understanding of effects of further reinforcements in the solid-liquid interaction on nucleate boiling over superhydrophilic surfaces is urgently desired. Whereas, it is considerably difficult to implement the relevant study and elucidate the underlying mechanism by current experimental approaches. Here, utilizing molecular dynamics simulations, effects of solid-liquid interactions on nucleate boiling over superhydrophilic surfaces are quantitatively illustrated. Our results manifest that, even for superhydrophilic surfaces, the bubble nucleation, growth and critical-heat-flux in nanoscale sense can be still strikingly enhanced with the improvement of solid-liquid interaction. Attractively, an optimal interaction energy coefficient (alpha = 1.5) for achieving maximal boiling enhancement is obtained in this study. The enhanced mechanism is elaborated by the heat transfer efficiency at the solid-liquid interface and energy barrier for phase-change. Additionally, it is found that conducting separate energy analyses for different liquid layers near the substrate is vital to reveal microscopic mechanisms thoroughly. This study provides significant guidance towards surface design in state-of-the-art thermal management systems.

关键词:

Boiling enhancement Potential energy barrier Molecular dynamics Heat transfer efficiency Superhydrophilic Solid-liquid interactions

作者机构:

  • [ 1 ] [Zhou, Wenbin]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conser, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
  • [ 2 ] [Han, Dongmei]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conser, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
  • [ 3 ] [Xia, Guodong]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conser, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China

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来源 :

APPLIED SURFACE SCIENCE

ISSN: 0169-4332

年份: 2022

卷: 591

6 . 7

JCR@2022

6 . 7 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 26

SCOPUS被引频次: 28

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

近30日浏览量: 6

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